Darkness is brewing under the skin of the Perrin household, birthed by a disastrous sibling rivalry between two brothers. Korin, an imaginative boy, grew up living in the shadow of his older brother. Davis wants life to be on his own terms and wishes he were an only child. After the death of their grandmother, Korin blames Davis for her demise and tries to destroy him. Sixteen years after the attempt on Davis's life, Korin comes to terms that his brother isn't the one who's the monster and suppresses his tormented feelings of guilt by ostracizing himself from his family. Yet, after a few years of being away from the family while attending college, a persistent nagging feeling of belonging somewhere haunts Korin, and he agrees to a family hunting trip to the forests of Grand Portage. The Perrin brothers, their father, and two family friends never make it to their final destination. A wake of destruction and bodies follow those who are trying to escape the forest, alive.